Proximity sensor
The proximity sensor enhances detection distance by using a concentric coil configuration, direct bonding, and shielding to mitigate the influence of embedded metals, thereby improving detection accuracy and range.
US20250264627A1Pending Publication Date: 2025-08-21KEYENCE CORP
Patent Information
- Application Number
- US19/015892
- Authority / Receiving Office
- US · United States
- Patent Type
- Applications(United States)
- Current Assignee / Owner
- Priority Date
- 2024-02-16
- Filing Date
- 2025-01-10
- Publication Date
- 2025-08-21
AI Technical Summary
Technical Problem
Proximity sensors fail to detect a weak change in reception waveforms due to the influence of embedded metals, limiting the detection distance.
Method used
The proximity sensor incorporates a first and second coil with the second coil disposed concentrically, a ferrite core, and a control circuit to detect changes in voltage or current, with direct bonding of coil wires to the substrate, and uses a magnetic and electric shield to suppress the influence of embedded metals.
Benefits of technology
The solution enables the sensor to extend the detection distance by effectively reducing the impact of embedded metals, improving detection accuracy and range.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure US20250264627A1-D00000_ABST
Abstract
Provided is a proximity sensor capable of sufficiently extending a detection distance by suppressing an influence of embedded metal. A coil of a proximity sensor includes a first coil and a second coil. The second coil is disposed concentrically with the first coil. The proximity sensor detects a detection object on the basis of a change in voltage or current generated in each of the first coil and the second coil. The coil wire of the first coil is electrically connected to the in-head substrate through direct bonding.
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Citation Information
Patent Citations
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US12117506B2
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US20090243225A1
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Cited By
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